European immigration changed America's overwhelmingly Protestant perspective by the early 1900s in many ways, one of which led to religious tolerance among the protestants.
The other effect is the idea of secularism became widespread in the United States.
This is evident in the fact that the Protestant belief or view in America before the 1900s is centered on the idea of controlling the American culture and fighting against secularism.
However, with many European immigrants coming into the United States around the 1900s with different religious ideologies and socioeconomic and political beliefs, the notion and ideas of a typical American Protestant changed over time.
Hence, in this case, it is concluded that the European immigrants changed the perceptions of typical American Protestants.
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The correct answer is sequences of comparable events.
<em>The kind of patterns that historians look as they track differences in societies are sequences of comparable events.
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When doing research on differences in societies, historians have to look for patterns in the societies they are studying to try to find sequences of comparable events. They need to compare similar variables in the societies they are comparing in order to have an accurate and valid comparison on circumstances, dates, and events.
The other options of the question were, b) sequences of events that have nothing to do with each other, c) sequence of colors, and d) the order in which events occurred.
